“Experimental measurement of VOC-dust interactions is essential. And what better analytical technique than SIFT-MS?”


Dr. Vaughan Langford

BSc(Hons), PhD


Director - Applications & Marketing

Vaughan joined Syft in 2002 after completing his PhD in Physical Chemistry at the University of Canterbury (1997) and post-doctoral fellowships at the Universities of Geneva, Western Australia, and Canterbury.

As manager of Syft’s contract laboratory, Vaughan has worked extensively with customers to understand their analysis needs and develop market-tested SIFT-MS solutions.

Vaughan has experience across all SIFT-MS application areas, but has particular expertise in environmental and food industry applications. He is an expert in SIFT-MS application and method development.

In addition to the technical aspects of his role, Vaughan leads Syft’s marketing efforts, including the extensive webinar and conference campaigns.

Posted by Dr Vaughan Langford, Director of Applications and Marketing at Syft Technologies.

Following their groundbreaking work demonstrating the role of dusts in heterogeneous atmospheric conversion of limonene, toluene and isopropanol, researchers from the University of Lille in France recently reported on the significance of heterogeneous chemistry for isoprene conversion.

Why isoprene? It is the most significant biogenic VOC (BVOC). Isoprene is readily oxidized in the gas phase and has a rather short lifetime in the atmosphere.

But what about chemical processes in aerosols and dusts – especially in dust storms? Utilizing SIFT-MS as their gas-phase probe, Manolis Romanias, Frédéric Thévenet and co-workers investigated the isoprene interactions with dust. They discovered that the contribution of heterogeneous chemistry to the total oxidation rate of isoprene is negligible.

The authors note that this result stands in contrast to the behavior of isopropanol on the same Gobi desert dust samples, making experimental measurement of these interactions essential.

And what better analytical technique to do this than SIFT-MS, with its very high sensitivity and selectivity, coupled with rapid analysis?

Note: You can read the full text of the article “Heterogeneous Interaction of Isoprene with Natural Gobi Dust” by Mohamad N. Zeineddine, Manolis N. Romanias, Vincent Gaudion, Véronique Riffault, and Frederic Thevenet in ACS Earth and Space Chemistry, 2017, volume 1, pages 236–243. It is available here: http://pubs.acs.org/doi/abs/10.1021/acsearthspacechem.7b00050.

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